Printing-form holder



May 15, 1928. 1,669,909

L. H. MORSE PRINTING FORM HOLDER Filed July 6, 1926 2 Sheets-$heet 1FIG. 2

gwucnloz May 15, 1928.

L. H. MORSE PRINTING FORM HOLDER Filed July 1926 2 Sheets-Sheet 2 I I8iv Patented May 15, 1928.

1,669,909 UNITED STATES PATENT OFFICE.

Inwiumcn n. MORSE; or CLEVELAND, oHIo, ASSIGNOR To THE mnmcan MULTI-GRAPH COMPANY, or CLEVELAND, 01110, A-COBPORATION or 01110.

rmnrine-ronm HOLDER...

Application med my a, 1926. Serial no. 120,619.

This invention relates to printing devices. An object is to provide aflexible printing form. which will be cheap to manufacture and whichwill securely retain printing slugs andhold them in proper position forprinting. A furtheryobject is to, provide a printing slug retainingdevice, employlng parallel 'rails, which may be quickly mounted on and.removed from a printing bed without disturbing the type The specificobject is to provide a simple andconven-ient printing form for use on aniultigraph or other machine of that character.

In the multigraph, forexample, the drum which supports the printing"slugs has been provided with T headed rails rigidly secured to thedrumat their bases. To sosecure the rails, various methods have beenfollowed,

the best perhaps being to form the drum from reasonably soft metal,machine grooves therein parallel to the axis of the drum, mount therails in the grooves, and then rivet the metal, between the grooves,down tightly againstthe base flanges of such rails. Obviously howeverwhen this is done, the rails must be left permanently on the drum. Fur'-their-{metal which will readily rivet over is comparatively expensive,and the grooves must be carefully machined, so thateach adjacent pair ofrails will be practically the same distance apart in order that uniformslugs may be used.

By my invention I am enabled to use simply a cylindrical drum havingasm'ooth out- .cr surface, thereby saving considerable machining cost,and the drum may be of any 'metahhaving sutiicient strength, for examplecast iron. Also, I have overcome certain .objections to having the railsa permanent part of the drum. Further advantages and features arehereinaftermore fully explained. The essential characteristics will besum- .marized :in the claims.

y In carrying outmy invention I employ a sheet of suitable metal having.upst-ruck lugs arranged in;rows, certain of the lugs of each pair ofadjacent rows extending toward each other to form in ,efi'ecta shallow,dove-tail groove. The railsare formed in the general shape. of standardrailroadrail, the flanges atuthe bottom beingcom'paratively thin to fitthe groove and the heads being so spaced thatstandard multigraph typeslugs may have a reasonably close sliding fittherebetween.

In the drawings Fig. 1 is a transverse cross-section through a printingmachine such as the multigraph, the paper feeding mechanism, thedelivery mechanism, and other parts, being omittedyFig. 2 is afragmentary plan of one end of the printing device forming the subjectof my invention; Fig. 3 15 an enlarged fragmentary cross-section showingthe sheet metal base and a number of rails retaining typeslugs; Fig. 4is a fragmentary perspective view showing thesheet metalbase, the railsand a number of type slugs carried thereby; Fig. 5 is a perspective viewof one of the rails; Fig. 6 1s a perspective View of the slug retainingmeans such as shown in Fig. 4,; Fig. 7 is a perspective view of the-typeslug.

Referring in detail to the drawings and indicating the various parts bysuitable characters A represents the base and frame of a printingmachine, B a printlng drum carried thereby shown as comprising anarcuate type carrying portion 0 and circular end members D. The drum maybe carried by a-shaft such as E extending therethrough and'supported bythe frame A. -An impression roll is indicated at F.

In order that various printing forms made in accordance with myinvention may be used interchangeably with the same printing machinewithoutchanging the drum, I may form the sheet metal base as indicatedat 1, which may be wrapped around the arcuate portion G of the drum :3and hookechas at 8, over marginal ribs C at one end, and similarlyhooked over a rib G of a pivote'd plate Gr, shown as supported by thedrum shaft. Means suchas a series of set scre\vsI I,onc'being shown ashearing against the end ofthe portion C, may be used to tighten up theblanket and cause it tofirmly'embrace the peripheral surfaceof the drum.inking means may comprise the ribbon J shown as fed from rolls R. v s

As shown most clearly in Fig. 4, the

blanket has parallel corr ugationsfi, from the tops of whichcorrugations extend lips 6.

shown these lips are alternately placed along the corrugations. firstonone side of a given corrugation and then on the other side. If desiredtheselips maybe oppositely disposed or arranged in any manner, with i orwithoutthe,corrugations} example, I. may use any one of theconstructions 'shown in the following patents: Clifton Chisholm, No.1,438,580 William Deming, No. 1,438,584; Burnie J. Craig,'No. 1,438,582.The particular form herein shown disclosed in tlie-copendin W.Macklin,Serial No 76,298.

The T rails 10, which may be conveniently formed as shown in Fig. 5,each have amentral web 11, T shaped heads IQtan-d base. flanges 13,these flangesb'eing coiiipaliatively' thin in order that they maybe slidbetween thQ IOWS of -lips 6 of adjacent corrugations withoutnecessitating forming the lips at any considerable distance from thegeneral outer surface of the base plate. If desired the rails nay befurther secured by immersion of the blanketand the bases of the rails ina solder bath. .fThe type, shown in Fig. 7, may be individual slugs 15,one for each letter as shown, or a longcrslug containing several lettersif desired. The slugs 15 have head portions 16 and base portions 17separated by groovesls substantially the width of the flanges which formthe railheads. As shown in Fig. 3, the bottom flanges of the slugs may.rest against the web portions of the rails to provide for alignment. Ii Any means may be used for holding the type slugs in place, such forexample, as by spring clips, one being shown at 20, Fig.6 as havingdownwardly extending portions 21 with grooves 221therein arrangedto fitover the T heads of adjacent rails, the spring of the material formingsuch members 20, being suflicient to retain the member in place onceit-is slipped between such adjacent rails. i I

It will be, understood that the device may be used either on a drum or aflat type bed, ince if the blanket were tolie flat, different shapedrails might-be provided to use the same slugs which are standard or thearrangement could be reversed and the same rails usedwith'thinner type,It will be also seen that, with the type removed, the blanket may belaid flatter shippingand storing, since the rails, will simply approacheach other to allow such flattening.

,From the above description it will be seen that by reason of thereduced cost of material usable in the drum and of the fact that thedrum does not have to be grooved as before to provide for mounting therails, the expense involved is materially less, even with the i'cost ofthe blanket taken into account. Another advantage is that the blanketcan be easily removed for storing with the typein place, whereas bytheformer ahead of time; that is to say, While a given job is beingprinted, another composition may be made up on a different blanketwithout'involving material cost as compared application ofJustin claimlmetal member having rows 0 with having to provide several" drums, and,in" addition, having to 'tie up the machine while a drum is beingreplaced.

Havingfthus described my invention, .1

1. 1h printing device comprising in com- "bination*a- 'plurality of Theaded rails, type slugs adapted tobe retained by the heads, asheetmetal base/adapted to be wrapped around a printing drum to presentsaid type for printing, said sheet metal base being formed to retain therails in position thereon;

2. A printing device comprising abla'nliet formed; of sheet materialhaving portions thcreofsevered and bent upwardly toflforin lugs, saidportions beingarranged 'in'rows, certain of thel'l'ugs extending in-onedirection and others extending in the opposite direction, and railshaving 'groovcs'in their o'ppositesides which rails are retaiiidin placeon the blanket parallel witheach other and spaced apart by reason ofsaid lugs en gaging the base flanges of the rails beneath the grooves."Y

I 3. A printing device comprising a" sheet metal member having separatedcorrugations therein, lugs extending from the tops of said corrugations,each being severed along one edge andjoined to the corrugations attlieother, and type retaining rails having flanged bases adaptedto be.slid underthe saidprojections and to be retained against lateralmovement with reference to the corrugations b the'saidcorrugationsfA'printing' evice comprising a sheet metal 'ine'mber having upstandingparallel corrugations with lips projecting laterally inoppositedirections from the tops of the corrugations a plurality of railsgroovedon the opposite sic es to present overhanging heads andprojecting base flanges, said rails occupying the spaces betweencorrugations and held in place by lipsenga ing the base fla11ge's,andtype" grooved on their opposite sides occupying the channels between therails, the heads of the rails occupying the grooves of the type.

51 A printing device comprising a sheet metal. member having lugsupstruck therefrom in rows, and type-slng retaining rails having flangedbases adapted to be held against said member by the lugs which overlapthe base flanges,adjacent rails having space between them adapted toreceive the feet of a row of grooved type. i

6. A printing device comprising a sheet upstruck lu rails having groovesin their opposite si es and retained inplace by the lugs, and typemembers extending between the rails and retainedby means ofprojectionson thetype members occupying said grooves. 1

In testimony whereof, I hereunto afiix my signature.

LAWRENCE H. MORSE".

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